제출 #339515

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
339515		beksultan04	생물 실험 (IZhO13_expgorl)	C++14	100 / 100	4 ms	364 KiB

expgorl

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin(),s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
#define eps 1e-12
const int N = 3e5+12,INF=1e9+7;
pair<double,double>  p[N];
int k, tx, ty;
double laser1, laser2, gx, gy;
string s;
double disting(double x,double y){
    ret (x - laser1)*(x-laser1)+(y-laser2)*(y-laser2);
}
void answer(double &ans){
    ans = max(ans, disting(gx, gy));
    double l=0,r=0,i;
    for (i=0;i<s.size();++i){
        if (s[i] == 'L')l--;
        if (s[i] == 'R')l++;
        if (s[i] == 'F')r++;
        if (s[i] == 'B')r--;
        ans = max(ans,disting(gx+l,gy+r));
    }
    l*=k-1;
    r*=k-1;
    for (i=0;i<s.size();++i){
        if (s[i] == 'L')l--;
        if (s[i] == 'R')l++;
        if (s[i] == 'F')r++;
        if (s[i] == 'B')r--;
        ans = max(ans,disting(gx+l, gy+r));
    }
}

double fun(int a){
    double x = a*tx + gx;
    double y = a*ty + gy;
    double ans=INF;
    ans = min(ans,disting(x, y));
    for (int i=0;i<s.size();++i){
        if (s[i] == 'L')x--;
        if (s[i] == 'R')x++;
        if (s[i] == 'F')y++;
        if (s[i] == 'B')y--;
        ans = min(ans, disting(x, y));
    }
    ret ans;
}

main(){
    scan1(k)
    cin>>s>>laser1>>laser2>>gx>>gy;
    int i,j;
    double mx = 0, mn = INF;
    answer(mx);
    for (i=0;i<s.size();++i){
        if (s[i] == 'L')tx--;
        if (s[i] == 'R')tx++;
        if (s[i] == 'F')ty++;
        if (s[i] == 'B')ty--;
    }

    int l=0,r=k-1;
    while (l+1 < r){
        int m = (l + r)>>1;
        if(fun(m) <= fun(m+1)) r = m;
        else l = m;
    }
    mn = min(fun(l), fun(r));
    cout <<fixed<<setprecision(12);
    cout <<sqrt(mn)<<" "<<sqrt(mx);
}

컴파일 시 표준 에러 (stderr) 메시지

expgorl.cpp: In function 'double fun(long long int)':
expgorl.cpp:54:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i=0;i<s.size();++i){
      |                  ~^~~~~~~~~
expgorl.cpp: At global scope:
expgorl.cpp:64:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   64 | main(){
      |      ^
expgorl.cpp: In function 'int main()':
expgorl.cpp:70:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |     for (i=0;i<s.size();++i){
      |              ~^~~~~~~~~
expgorl.cpp:67:11: warning: unused variable 'j' [-Wunused-variable]
   67 |     int i,j;
      |           ^
expgorl.cpp:11:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   11 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
expgorl.cpp:65:5: note: in expansion of macro 'scan1'
   65 |     scan1(k)
      |     ^~~~~

• Subtask 1: 100 / 100